real number
[/ˈriːəl ˈnʌmbər/]
nounpl: real numbers
número real
1. Any number that can be represented on a number line, including rational numbers (integers and fractions) and irrational numbers (such as π and √2)
The set of real numbers includes both 3.14 and √2.
O conjunto dos números reais inclui tanto 3,14 quanto √2.
2. A mathematical element of the real number system, denoted by ℝ, which forms a complete ordered field
Every real number can be expressed as a decimal expansion.
Todo número real pode ser expresso como uma expansão decimal.
3. A number that is not imaginary or complex (contrasted with imaginary numbers)
5 is a real number, but 5i is imaginary.
5 é um número real, mas 5i é imaginário.
This is a fundamental mathematical term used identically in both Brazilian Portuguese and American English mathematics education. It is a cornerstone concept introduced in high school algebra and is essential for understanding calculus, analysis, and higher mathematics. The term carries no colloquial usage and is exclusively academic.
Look up more words on Fala2Me
The free English-Portuguese dictionary with real Brazilian accents, NYC slang, conjugator and more
Open Fala2Me →